Interrupted bead cap



\ Aug. 14, 1923. 1,464,584

G. RAMSEY INTERRUPTED BEAD CAP Filed Jan. 27 1921 C Z A MIM 9 Patented Aug. 14, 1923.

UNITED STATES 1,464,584 PATENT OFFICE.

GEORGE RAMSEY, F BROOKLYN, NEW YORK, ASSIGNOB T0 ANCHOR CAP AND CLOSURE CORPORATION, OF LONG ISLAND CITY, NEW YORK, A CORPORATION 0F NEW YORK.

' INTERRUPTED BEAD CAP.

Application led January 2?, 1921.

To all whom it may concern:

Be it known that I, Gnocca Ramsar, a citizen of the United States, residing in the y borough of Brooklyn, in the county of 5 Kings, State of New York, have invented certain new and useful Improvements 1n Interrupted Bead Caps, of which the followin is a specification.

bis invention relates broadly to packaging and more specially to a friction cap and the package sealed by the friction cap. The` principal object of the present invention is the provision of a friction cap having a sealing zone made up of a plurality of spaced apart contact portions angularly disposed over the depth of the skirt of cap.

Another object of the present invention kis a friction cap providedwith a plurality of spaced apart sealing members adapted to comprise a wave-like sealing zone in the skirt of the cap.

A still furthenyobject of the present invention isla friction"cap having a plurality7 of spaced apart sealing zones adjacent both the up er and lower ed e of the skirt of the cap;

still further Aob]ect of the present invention is a friction cap having a sealing zone `thereof comprising a plurality of spaced apart sealing contact members adapted to provide yiel ing zones in the skirt of the .cap forming friction sealing members to cooperate with a smooth cylindrical side walled vessel to provide a friction sealed package. Another and further object of the present invention is a friction cap of the character specified comprising a suitable skirted cap with angularly disposed individual sealing members arranged in the skirt of the cap and with a suitable gasket carried by a cap 4 in such manner that when the ca is forced over the mouth of a substantially incompressible container a friction seal is formed between the cap and the container` and the gasket forms a hermetically sealed package 45 by contacting with the end of the side wall of the container.

Other and further objects of the present invention will in part be obvious and will in part be pointed out hereinafter in the specification following by reference to the accompanying drawings and wherein like parts are represented' by like characters throughout the several figuresfthereof.

It is realized that the present invention Serial No. 440,299.

may be embodied in forms other than those herein shown and described therefore it is desired that the disclosures herein shall be considered as illustrative and not be taken in the limiting sense.

Figure 1 illustrates one embodiment of the present invention and comprises a cap ready to be sealed upon a suitable container.

Figure 2 illustrates another embodiment of the invention in slightly different form with a portion of the cap skirt broken away to show a gasket.

. Figure 3 illustrates a `further modification of the invention.

Figure shows a still further form of the present invention and Figure 5, illustrates a still further form of sealing bead. i

Heretof'ore in the art of friction caps there have generally been three types of caps. First the cylindrical skirted type usually applied to metal cans and limited to close fitting sized containers because of the small limit of elasticity in the skirt. The second type comprises the straight continuously beaded cap with the bead concave on the exterior and the skirt convex on the interior. Such caps'require accurate application otherwise the bead may be deformed and the seal spoiled. The third type, are caps having separated spots or sections of beads arranged on substantially the same plane, or diameter so that the maximum sealing effort is required at one time and wherein the stress of the skirt of the cap is transmitted to one zone in the skirt. This type has the same objections as the full bead type.

There is a fourth type of cap which is disclosed in my prior application No. 400,396 filed July 31, 1920, comprising a sinuous bead cap and the present invention is a modification of the broad invention disclosed in the said sinuous bead application. The disclosure of the broad invention comprises continuous sinuous beads of various forms and in that type the flexibility of the skirt during the sealing action is dependent largely on' the stretching of the bead. ln the present invention the bead comprises separate spots, which when taken together form the sealing zone, and with a slight expanse of the capskirt between each of these spots so that when the cap expands in sealing these portions tend to increase the iexibility of the skirt thereby increasing the sealing range of the cap so that greater va riations both as to size and distortion of glass containers may be sealed. This is of great importance to the packer since in the manufacture of glass containers the container is usually removed from the mold before the glass is thoroughly hardened and it is not unusual for the carrying or lifting operation to slightly distort the shape of the glass so in the trade it is known as out of round. Furthermore molds are not all of uniform diameter and even if'they were the glass may change slightly in diameter during the annealing or other manufacturing ste s. It is the purpose of friction seal caps o various types to accommodate the cap to imperfect glassware within as large a range of limits as possible in order to permit the user to uti ize the general run of glassware rather than to greatly increase expsnse by requiring a special selection of su tantially perfect ware as to size and shape. Furthermore it is important that the sealing action take place with a minimum use of power in order to save breakage and waste of energy. The present invention is designed more specially with these objects in View and it provides a very flexible skirt having sealing members thereof arranged to provide a tight gripping seal and at the same time is constructed in such manner that the sealing forces are spread out over the time required to -force the whole skirt over the mouth Lof the container rather than torequire the maximum sealing forces at one moment. This rmits of lighter machinery.l of less ,liabilitv of glass breakage and makes the driving load on the packers factory more uniform. y

Referring now to the drawings and more specially to Figure 1 which illustrates one embodiment of the invention comprising a cap A having a cover portion `l with a skirt 2 depending from said cover portion, and preferably with the beaded edge 4 which may comprise a wired edge or simply a slight outward roll in order to Finish the rough edge of the skirt. The skirt may be Yprovided with spaced apart indentations Vwhich may take the form of spots or buttons 5 and 6 which are convex on the interior of the skirt and concave on the exterior thereof with the buttons designated as 5 comprising a series arranged adjacent the lower edge of the skirt and the buttons designated as 6 comprising a series forming a row adjacent the upper edge of the skirt and with' the buttons of the two rows arranged in staggered relation. The lower row of buttons 5 extends inwardly suincient so that the maximum diameter measured from the inner tips of the buttons isless than the maximum diameter of the c lin-V drical portion 'i' of the container B. his

container preferably is of glass or the like having substantially incompressible side walls. As the cap is forced downwardly over the mouth of the container B the inner points of the buttons 5 will contact with the upper rounded edge of the container and will gradually stretch or flatten as the telescoping movement of the cap continues. lVhere the package is being formed in open air the confined air in the container esca es between the skirt of the cap and the side wall of the container in the spaces provided between the buttons 5 so that the danger of producing compressed gas in the container during sealing is obviated and where the cap is set under a vacuum these spaces facilitate the withdrawal of the air from the package. As the cap further telescopes on the container the upper row of spots or buttons 6 is forced over the mouth of the container and form additional holding members. It will be noted that the staggered relation of the members in the upper and lower rows tends to permit a slight stretching of the skirt on diagonal lines thereby producin a condition of resilience which enables t e user to utilize the cap on relatively large variations in sizes of containers. Where no gasket is used the cap is admirably adapted for caps which are used to package materials which require Contact with the air, in that it permits the circulation of air between the side wall of the cap and container bod Where a hermetic seal is desired the gasket C may be arranged to lie in the upper edge or corner of the cap. This gasket may be of soft compressible material as is commonly used in the art or may comprise a fiat rubber gasket, which is also in common use. Where a flat gasket is used preferably the upper portion of the skirt of the cap is provided with a groove 8, such as is indicated in Figure 2, and the outer edge of the gasket may lie in this groove thereby being held in position during the handling or applying of the cap.

Figure 2 illustrates the friction gripping members as being V-shaped members 9 so that during the sealing operation these members first engage the upper edge of the container by the lower tips 'of the V-shaped members and as the cap and the container are telescoped the sealing zone gradually extends diagonally from the lower points, but in view of the fact that the upper ends of theVs are spaced apart an open space is left up until the final moment of sealing agtainstthe gasket and may be retained even a er the cap is in position by omitting the gasket C.

In the cap shown in Fi re 3 the sealn members comprise space apart diagona,

rou s 10 and 11 which are eonvexed on the interior of the skirt and concave on the substantially semi-circular grooves arranged 1 in spaced apart series so that the diagonal stresses on the skirt are maintained at the same time the open passageways are presented. In the form illustrated in Figure 5 the gripping members 13 are shown as being inverted V-shaped members which produce an effect similar to the form shown in Figure 2.

The drawings illustrate but a few of the many variations of which the present invention is capable and which all embody the same general principles; comprising stressing the skirt diagonally and providing the free passages beneath the skirt of the cap to the interior of the container up until the final sealing moment, where a gasket is used, thereby particularly adapting the present cap to be used where a hermetic seal is obtained at the final sealing moment and wherein the passageways beneath the cap facilitate exhausting the air in the package up until the instant of completing the seal.

Having thus described my invention, what I claim is:

1. As an article of manufacture a closure cap comprising a cover portion, a skirt depending from the cover portion, and a lurality of spaced apart holding projections formed on the interior of said skirt, the arrangement of the projections being such that when the cap is applied the skirt thereof is stressed on diagonal lines and-wherein air passages are provided between the said projections and the side wall of a suitable container during the sealing operation.

2. As an article of manufacture a closure cap comprising a-cover portion, a skirt depending from the cover portion, and a plu` rality of spaced apart holding projections formed on the interior of said skirt, the arrangement of the projections being such that when the cap is applied the skirt thereof is stressed on diagonal lines.

3. As an article of manufacture a closure cap comprising a cover portion, a skirt depending from the cover portion, and a lurality of spaced apart holding projections formed on the interior of said skirt, said projections being adapted to be flattened in the sealing operation and the arrangement of the projections being such that when the cap is applied the skirt thereof is stressed on diagonal lines and wherein air passages are provided between the said projections and the side wall of a suitable container during the sealing operation.

4. As an article of manufacture a closure cap comprising a cover portion, a skirt depending from the cover portion, and a plurality of spaced apart holding projections formed on the interior of said skirt, the arrangement of the projections being such that when the 'ca is applied the skirt thereof is stressed on iagonal lines, a portion of the projections being in the lower part 'of the skirt and another portion being in the upper part of the skirt, and wherein air passages are provided between the said projections and the side wall of a suitable container during the sealing operation.

5. As an article of manufacture a closure cap comprising a cover portion, a skirt depending from the cover portion, and a lurality of spaced apart holding projections formed on the interior of said skirt, said projections being adapted to be flattened in the sealing operation, and the arrangement of the projections being Such that when the cap is .applied the skirt thereof is stressed on diagonal lines, a portion of the projections being in the lower part of the skirt and another portion being in the upper part of the skirt.

6. A closure cap comprising a cover rtion, a skirt extending at substantially right angles to said cover portion, a plurality of spaced apart holding members arranged to project inwardly from the side wall of said skirt and adapted to contact with the side wall of a suitable container, said members being arranged to subject substantially the entire skirt to diagonal stresses when the cap is applied and with the sealing forces increasing from the initial application of the cap until substantially the final setting thereof on a suitable container.

7. A closure cap comprising a cover portion, a cylindrical skirt extending at sub-` stantially right angles to said cover portion,

a plurality of spaced apart holding members arran ed to project inwardl from the normal side wall of said cylin rical skirt and adapted to contact with a smooth side wall of a suitable container, said members being arranged to subject substantially the entire skirt to diagonal stresses when the cap is applied.

8. A closure cap comprising a cover portion, a skirt on said cover portion a plurality of spaced apart holding mem ers arranged to project inwardly from the side wall of said skirt and adapted to contact with the side wall of a suitable container, said members bein da onally arranged to subject substantia ly t e entire skirt to stresses when the cap is applied and with the sealing forces tending to hold the cap in place increasing from the initial app ication of the ca until substantially the final setting thereo on a suitable container.

9. Ajfriction closure cap comprising a cover portion, a skirt extending from the cover portion, and a sealing bead in said skirt portion comprising a plurality of i spaced apart members arranged to produce 'skirt portion comprising a pluralit sealing members arrange sinous stresses in said skirt when the cap is applied to a suitable container.

10. A friction closure cap comprising a cover portion, a skirt extending from the cover portion, and a sealing 'bead in said skirt portion comprising a plurality of inwardly projecting spaced apart members ar. ranged to produce sinuous stresses in said skirt when the cap is applied to a suitable container, said members being ada ted to Contact with said container at space yapart intervals.

11. A friction closure cap comprising a cover portion, a skirt extending from the cover portion, and a sealing bead in saitjl o spaced apart diagonally arranged friction members adapted to produce sinuous stresses in said skirt when the cap is applied to a suitable container. i

12. A closure cap comprising-a cover portionfa skirt extending from said covermportion, a sealing bead provided in said skirt and comprising a pluralit of spaced apart to provide passageways between the exterior and interior of said container, and with the members arranged to increase the friction contact surface between the cap and a suitable con- `tainer as the cap is telescoped over the container.

13. As an article of manufacture a package comprising a container having a substantially incompressible side wall, in combination with a closure cap comprising a cover portion, a skirt depending from the cover portion and telescoped over the mouth of said containers, and a plurality of spaced apart holding projections formed on the interior of said skirt, the arrangement of the projections being such that the said skirt is stressed on diagonal lines and wherein air passages are provided between the said projections yand the side wall `of the container. A

14. As an articleof manufacture a package comprising a container having a; substantially incompressible side Wall, in oombination vwith a closure cap comprising a cover portion, a skirt depending from the fcover portion, and a plurality ofpspaced apart holdin projections formed on the interior of sai skirt, the arrangement of the projections being such that the said skirt is stressedon diagonaly lines when in position on said container'.

GERGE RAMSEY. 

